How to download and setup rubocop-performance
Open terminal and run command
                                            git clone https://github.com/rubocop/rubocop-performance.git
                                        
                                        git clone is used to create a copy or clone of rubocop-performance repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with rubocop-performance https://github.com/rubocop/rubocop-performance/archive/master.zip
Or simply clone rubocop-performance with SSH
                                            [email protected]:rubocop/rubocop-performance.git                                    
                                    If you have some problems with rubocop-performance
You may open issue on rubocop-performance support forum (system) here: https://github.com/rubocop/rubocop-performance/issuesSimilar to rubocop-performance repositories
Here you may see rubocop-performance alternatives and analogs
fastlane rails jekyll discourse gitlabhq awesome-interview-questions devise ruby ruby-style-guide brew diaspora selenium capistrano sinatra spree rubocop awesome-ruby sidekiq grape postal activeadmin Command-line-text-processing kaminari simple_form faker fluentd factory_bot awesomo graal chef